package socket;

import java.awt.*;
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;

public class Server4 {
    private ServerSocket serverSocket;

    private List<PrintWriter> allOut = new ArrayList<>();

    public Server4() {
        try {
            System.out.println("正在启动客户端...");
            serverSocket = new ServerSocket(8088);
            System.out.println("服务器启动完毕！");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void start() {
        while (true){
            try {
                System.out.println("等待客户端连接");
                Socket socket = serverSocket.accept();
                System.out.println("一个客户端连接上了");

                CliebtHandle handle = new CliebtHandle(socket);
                Thread t = new Thread(handle);
                t.start();


            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    private class CliebtHandle implements Runnable {

        private Socket socket;
        private String host;

        public CliebtHandle(Socket socket) {
            this.socket = socket;
            host = socket.getInetAddress().getHostAddress();
        }

        public void run() {
            try {
                InputStream is = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(is, StandardCharsets.UTF_8);
                BufferedReader br = new BufferedReader(isr);

                //V3:通过socket获取用于给客户端发送消息
                OutputStream os = socket.getOutputStream();
                OutputStreamWriter osw = new OutputStreamWriter(os, StandardCharsets.UTF_8);
                BufferedWriter bw = new BufferedWriter(osw);
                PrintWriter pw = new PrintWriter(bw);

//                V4:将对应的该客户端输出流存入到共享集合allOut中，便于其它线程可以访问到
                allOut.add(pw);

                String message;
                while ((message = br.readLine()) != null) {
                    System.out.println(host + "说:" + message);

                    for (PrintWriter o : allOut) {
                        o.println(host + "说:" + message);
                    }
                }

            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }


    public static void main(String[] args) {
        Server4 server = new Server4();
        server.start();
    }

}
